/**
 * Copyright (C)  2011  chen wei hua.
 * Permission is granted to copy, distribute and/or modify this document
 * under the terms of the GNU Free Documentation License, Version 2.0
 * or any later version published by the Free Software Foundation;
 * with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
 * A copy of the license is included in the section entitled "GNU Free Documentation License".
 */
package com.javaeye.common.interceptor;

import com.javaeye.common.dto.User;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;

public class AuthorityInterceptor extends AbstractInterceptor {
	
	private static final long serialVersionUID = 587894205891244325L;

	public String intercept(ActionInvocation invocation) throws Exception {
		ActionContext ctx = invocation.getInvocationContext();
		User user = (User) ctx.getSession().get(User.LOGIN);
		if (user != null) {
			return invocation.invoke();
		} else {
			return ActionSupport.LOGIN;
		}
	}
}
